Core Ultra 5 245KF vs Core 2 Extreme QX9650
Primary details
Comparing Core 2 Extreme QX9650 and Core Ultra 5 245KF processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 176 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 81.94 |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | no data | 20.74 |
| Architecture codename | Yorkfield (2007−2009) | Arrow Lake-S (2024−2025) |
| Release date | November 2007 (17 years ago) | 24 October 2024 (less than a year ago) |
| Launch price (MSRP) | no data | $294 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core 2 Extreme QX9650 and Core Ultra 5 245KF basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 4 (Quad-Core) | 14 (Tetradeca-Core) |
| Threads | 4 | 14 |
| Base clock speed | 3 GHz | 4.2 GHz |
| Boost clock speed | 3 GHz | 5.2 GHz |
| Bus rate | 1333 MHz | no data |
| L1 cache | 64K (per core) | 112 KB (per core) |
| L2 cache | 12 MB (shared) | 3 MB (per core) |
| L3 cache | 0 KB | 24 MB (shared) |
| Chip lithography | 45 nm | 3 nm |
| Die size | 2x 107 mm2 | 243 mm2 |
| Maximum case temperature (TCase) | 64 °C | no data |
| Number of transistors | 820 million | 17,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
| Unlocked multiplier | + | - |
| VID voltage range | 0.85V-1.3625V | no data |
Compatibility
Information on Core 2 Extreme QX9650 and Core Ultra 5 245KF compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | 1 |
| Socket | LGA775 | 1851 |
| Power consumption (TDP) | 130 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core 2 Extreme QX9650 and Core Ultra 5 245KF. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | no data |
| Hyper-Threading Technology | - | no data |
| TSX | - | + |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Demand Based Switching | - | no data |
| FSB parity | + | no data |
Security technologies
Core 2 Extreme QX9650 and Core Ultra 5 245KF technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core 2 Extreme QX9650 and Core Ultra 5 245KF are enumerated here.
| VT-d | no data | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core 2 Extreme QX9650 and Core Ultra 5 245KF. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1, DDR2, DDR3 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | N/A |
Peripherals
Specifications and connection of peripherals supported by Core 2 Extreme QX9650 and Core Ultra 5 245KF.
| PCIe version | no data | 5.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Physical cores | 4 | 14 |
| Threads | 4 | 14 |
| Chip lithography | 45 nm | 3 nm |
| Power consumption (TDP) | 130 Watt | 125 Watt |
Ultra 5 245KF has 250% more physical cores and 250% more threads, a 1400% more advanced lithography process, and 4% lower power consumption.
We couldn't decide between Core 2 Extreme QX9650 and Core Ultra 5 245KF. We've got no test results to judge.
Should you still have questions on choice between Core 2 Extreme QX9650 and Core Ultra 5 245KF, ask them in Comments section, and we shall answer.
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